The tendency of many limited-edition vehicles to rise in value has made them even more attractive in the Gulf region’s otherwise-wobbly investment climate

On a typical Friday evening, some of the world’s swankiest cars can be seen crawling along a roughly 16-mile stretch of Dubai’s Jumeirah Beach road. Bentleys pull up next to Bugattis; there are Ferraris and Lamborghinis.

In heavy traffic, most don’t speed up further than the next stop light, but for many of their owners, driving isn’t necessarily the point.